What is the name of a way to round numbers to the tens place and hundreds place?
"M.3.10
Use place value understanding to round whole numbers to the nearest 10 or 100."
Learning objective:
Rounding helps us to quickly estimate a number without needing to know the exact value. We can round numbers to the nearest tens or hundreds place. It's a helpful skill to have in math and in real life!
Rounding to the Nearest Tens and Hundreds
rounding: A way of approximating a number by replacing it with another number that is close in value. tens place: The digits in a number that represent the value '10s'. hundreds place: The digits in a number that represent the value '100s'.
Concepts:
The ancient Babylonians were some of the first people to use rounding. In math, we use the terms 'up' and 'down' when rounding - for example, rounding 754 up would give you 800. In some countries, prices are often rounded up or down to the nearest 10 cents!
Fun facts:
Work together in pairs: Round the number 437 to the nearest ten and nearest hundred.
Work together in pairs: What is the rounding of 897 to the nearest 10 and to the nearest 100?
Brain break: Draw a picture of a cat driving a race car!
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